I agree, and what you say is fair. But Australia is very closely allied with the US, and so the decisions of your leader heavily influence the decisions of ours, and they affect foreign policy in this country as well.
You see it every day, no matter where you go. Kids in particular have become so American-ised that they are adopting your patterns of speech, vocabulary, trying to emulate what they see as being American, our television, our media, our advertising - it's all a carbon-copy `mini-me' of the United States.
Our national identity is changing from one that was uniquely Australian to one that is imitation American. It's a shame and it really bothers me and a lot of Australians of my generation and older. It's not because it's America that so many Australians try to emulate - I'd have an issue with it no matter what country it was we were trying to copy. There is nothing wrong with Australia being Australian, and I feel that this should be celebrated, not buried by trying to manufacture another culture.
But in terms of criticising your leader, well, no that may not be fair. But again, Australian foreign policy, even Australian `home' policy, has changed SO much in the years since Mr Bush came into power, directly due to his close relationship with and influence over our Prime Minister, that many Australians feel we have the right to say what we think about him and speak out against him (even though, as you say, we have not grown up there and are not native to America) because everything he does has a direct (and negative) impact on what happens in this country.
And, just as an aside - barefoot at school?? Lol...I wish. If you even took your shoes off to scratch your foot at my school you were towered over by whatever authority figure was at hand until you got them right back on again!